Powered up last night, had a couple of drop target switches stuck on continuously advancing the 100s reel, found that fairly easily. 
Then none of the 10 point switches were working, but when manually activated the 10 point relay switches turned the reel and sounded the chime, after a bit of mucking around it ended up being only a loose plug, I had removed one above it in the back box to clean the pins which had pulled out the smaller one, it was sitting in the correct place but not pushed home 

Here are a few shots from last night after I powered it up and had a few games